Introduction

Wireless technologies work out of sight to allow people to carry out rich communications with
peace of mind. For
example, wireless technologies are used in most communication devices around us, including
mobile phones, TV
sets, radios, and GPS devices. Further, satellite communications and mobile phones are the most
essential as
means of communication in places such as mountainous areas and islands, where optical cables
are difficult to be
laid, and in times of disaster.

The Wireless Networks Research Center of the National Institute of Information and
Communications Technology
(NICT) conducts research and development of wireless communication and wireless network
technology to allow
people and things to flexibly and reliably communicate under any kinds of situations through
the effective use
of frequency and energy resources.